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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.common.geo.builders;
import com.vividsolutions.jts.geom.Coordinate;
import org.elasticsearch.common.geo.builders.ShapeBuilder.Orientation;
import org.elasticsearch.test.geo.RandomShapeGenerator;
import org.elasticsearch.test.geo.RandomShapeGenerator.ShapeType;
import java.io.IOException;
import static org.hamcrest.Matchers.equalTo;
public class PolygonBuilderTests extends AbstractShapeBuilderTestCase<PolygonBuilder> {
@Override
protected PolygonBuilder createTestShapeBuilder() {
return createRandomShape();
}
@Override
protected PolygonBuilder createMutation(PolygonBuilder original) throws IOException {
return mutate(original);
}
static PolygonBuilder mutate(PolygonBuilder original) throws IOException {
PolygonBuilder mutation = (PolygonBuilder) copyShape(original);
return mutatePolygonBuilder(mutation);
}
static PolygonBuilder mutatePolygonBuilder(PolygonBuilder pb) {
if (randomBoolean()) {
pb = polyWithOposingOrientation(pb);
} else {
// change either point in shell or in random hole
LineStringBuilder lineToChange;
if (randomBoolean() || pb.holes().size() == 0) {
lineToChange = pb.shell();
} else {
lineToChange = randomFrom(pb.holes());
}
Coordinate coordinate = randomFrom(lineToChange.coordinates(false));
if (randomBoolean()) {
if (coordinate.x != 0.0) {
coordinate.x = coordinate.x / 2;
} else {
coordinate.x = randomDoubleBetween(-180.0, 180.0, true);
}
} else {
if (coordinate.y != 0.0) {
coordinate.y = coordinate.y / 2;
} else {
coordinate.y = randomDoubleBetween(-90.0, 90.0, true);
}
}
}
return pb;
}
/**
* Takes an input polygon and returns an identical one, only with opposing orientation setting.
* This is done so we don't have to expose a setter for orientation in the actual class
*/
private static PolygonBuilder polyWithOposingOrientation(PolygonBuilder pb) {
PolygonBuilder mutation = new PolygonBuilder(pb.shell(),
pb.orientation() == Orientation.LEFT ? Orientation.RIGHT : Orientation.LEFT);
for (LineStringBuilder hole : pb.holes()) {
mutation.hole(hole);
}
return mutation;
}
static PolygonBuilder createRandomShape() {
PolygonBuilder pgb = (PolygonBuilder) RandomShapeGenerator.createShape(getRandom(), ShapeType.POLYGON);
if (randomBoolean()) {
pgb = polyWithOposingOrientation(pgb);
}
return pgb;
}
public void testCoerceShell() {
try{
new PolygonBuilder(new LineStringBuilder(new CoordinatesBuilder().coordinate(0.0, 0.0)
.coordinate(1.0, 0.0).coordinate(1.0, 1.0).build()), Orientation.RIGHT);
fail("should raise validation exception");
} catch (IllegalArgumentException e) {
assertEquals("invalid number of points in LinearRing (found [3] - must be >= 4)", e.getMessage());
}
PolygonBuilder pb = new PolygonBuilder(new LineStringBuilder(new CoordinatesBuilder().coordinate(0.0, 0.0)
.coordinate(1.0, 0.0).coordinate(1.0, 1.0).build()), Orientation.RIGHT, true);
assertThat("Shell should have been closed via coerce", pb.shell().coordinates(false).length, equalTo(4));
}
public void testCoerceHole() {
PolygonBuilder pb = new PolygonBuilder(new CoordinatesBuilder().coordinate(0.0, 0.0)
.coordinate(2.0, 0.0).coordinate(2.0, 2.0).coordinate(0.0, 0.0));
try{
pb.hole(new LineStringBuilder(new CoordinatesBuilder().coordinate(0.0,0.0).coordinate(1.0,0.0).coordinate(1.0,1.0).build()));
fail("should raise validation exception");
} catch (IllegalArgumentException e) {
assertEquals("invalid number of points in LinearRing (found [3] - must be >= 4)", e.getMessage());
}
pb.hole(new LineStringBuilder(new CoordinatesBuilder().coordinate(0.0,0.0).coordinate(1.0,0.0).coordinate(1.0,1.0).build()), true);
assertThat("hole should have been closed via coerce", pb.holes().get(0).coordinates(false).length, equalTo(4));
}
}
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